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Freshwater Fish Species
All freshwater fish species found in rivers, lakes, streams, and ponds worldwide. From tiny tetras to the giant arapaima — covering every continent.
18,067
Total Species
1,926
Endangered (EN+CR)
1,910
Edible Species
204
Families
King Yalu high-plateau loach
Triplophysa yaluwang
Nemacheilidae
Kinneret bleak
Mirogrex terraesanctae
Cyprinidae
Least Concern
Kissing gourami
Helostoma temminckii
Least Concern
Kissing loach
Parabotia curtus
Botiidae
Critically Endangered
Kissing prochilodus
Semaprochilodus insignis
Prochilodontidae
Least Concern
Kite Poptella
Poptella longipinnis
Acestrorhamphidae
Least Concern
Kithulgala danio
Devario micronema
Cyprinidae
Endangered
Kiungululu tilapia
Oreochromis chungruruensis
Cichlidae
Critically Endangered
Kiyi
Coregonus kiyi
Salmonidae
Vulnerable
Kizilirmak sportive loach
Oxynoemacheilus samanticus
Nemacheilidae
Least Concern
Kızılırmak killifish
Anatolichthys marassantensis
Klamath Lake sculpin
Cottus princeps
Cottidae
Data Deficient
Klamath largescale sucker
Catostomus snyderi
Catostomidae
Near Threatened
Klamath river lamprey
Entosphenus similis
Petromyzontidae
Near Threatened
Klapanunggal blind cave barb
Barbodes klapanunggalensis
Cyprinidae
Klausewitzia Ritae
Klausewitzia ritae
Least Concern
Knaacks cory
Hoplisoma knaacki
Kneria Angolensis
Kneria angolensis
Kneriidae
Least Concern
Kneria Ansorgii
Kneria ansorgii
Kneriidae
Data Deficient
Kneria Katangae
Kneria katangae
Kneriidae
Least Concern
Kneria Luansaensis
Kneria luansaensis
Kneriidae
Kneria Maxi
Kneria maxi
Kneriidae
Kneria Paucisquamata
Kneria paucisquamata
Kneriidae
Least Concern
Kneria Ruaha
Kneria ruaha
Kneriidae
Vulnerable
Kneria Rukwaensis
Kneria rukwaensis
Kneriidae
Least Concern
Kneria Sjolandersi
Kneria sjolandersi
Kneriidae
Data Deficient
Kneria Stappersii
Kneria stappersii
Kneriidae
Least Concern
Kneria Uluguru
Kneria uluguru
Kneriidae
Vulnerable
Kneria Wittei
Kneria wittei
Kneriidae
Least Concern
Knife livebearer
Alfaro cultratus
Poeciliidae
Least Concern
Knipowitschia Montenegrina
Knipowitschia montenegrina
Gobiidae
Near Threatened
Knipowitschia Mrakovcici
Knipowitschia mrakovcici
Gobiidae
Critically Endangered
Knobfin sculpin
Cottus immaculatus
Cottidae
Least Concern
Knobnose whiptail catfish, Pinocchio whiptail catfish
Hemiodontichthys acipenserinus
Loricariidae
Least Concern
Knodus Alpha
Knodus alpha
Stevardiidae
Least Concern
Knodus Borari
Knodus borari
Stevardiidae
Knodus Borki
Knodus borki
Stevardiidae
Data Deficient
Knodus Caquetae
Knodus caquetae
Stevardiidae
Knodus Chapadae
Knodus chapadae
Stevardiidae
Least Concern
Knodus Delta
Knodus delta
Stevardiidae
Data Deficient
Knodus Dorsomaculatus
Knodus dorsomaculatus
Stevardiidae
Endangered
Knodus Figueiredoi
Knodus figueiredoi
Stevardiidae
Knodus Gamma
Knodus gamma
Stevardiidae
Least Concern
Knodus Geryi
Knodus geryi
Stevardiidae
Least Concern
Knodus Guajajara
Knodus guajajara
Stevardiidae
Knodus Heteresthes
Knodus heteresthes
Stevardiidae
Least Concern
Knodus Hypopterus
Knodus hypopterus
Stevardiidae
Least Concern
Knodus Longus
Knodus longus
Stevardiidae
Vulnerable